1. The Development of the Teeth, and Some of the Contested Points in Regard To Their Development and Structure
2. and 1922 Anatomy and histology of the mouth and teeth, 6th ed. Blakiston, Philadelphia.
3. 1899 Kölliker's Handbuch der Gewebelehre des Menschen, 6te Aufl., 3tes Bd., S. 74-126. Leipzig.
4. and 1914 A text-book of histology arranged upon an embryological basis, 2nd ed. Blakiston, Philadelphia.